LXR linux/arch/arm/mach-integrator/clock.c

   1/*
   2 *  linux/arch/arm/mach-integrator/clock.c
   3 *
   4 *  Copyright (C) 2004 ARM Limited.
   5 *  Written by Deep Blue Solutions Limited.
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11#include <linux/module.h>
  12#include <linux/kernel.h>
  13#include <linux/errno.h>
  14#include <linux/clk.h>
  15#include <linux/mutex.h>
  16
  17#include <asm/clkdev.h>
  18#include <mach/clkdev.h>
  19
  20int clk_enable(struct clk *clk)
  21{
  22        return 0;
  23}
  24EXPORT_SYMBOL(clk_enable);
  25
  26void clk_disable(struct clk *clk)
  27{
  28}
  29EXPORT_SYMBOL(clk_disable);
  30
  31unsigned long clk_get_rate(struct clk *clk)
  32{
  33        return clk->rate;
  34}
  35EXPORT_SYMBOL(clk_get_rate);
  36
  37long clk_round_rate(struct clk *clk, unsigned long rate)
  38{
  39        struct icst525_vco vco;
  40        vco = icst525_khz_to_vco(clk->params, rate / 1000);
  41        return icst525_khz(clk->params, vco) * 1000;
  42}
  43EXPORT_SYMBOL(clk_round_rate);
  44
  45int clk_set_rate(struct clk *clk, unsigned long rate)
  46{
  47        int ret = -EIO;
  48
  49        if (clk->setvco) {
  50                struct icst525_vco vco;
  51
  52                vco = icst525_khz_to_vco(clk->params, rate / 1000);
  53                clk->rate = icst525_khz(clk->params, vco) * 1000;
  54                clk->setvco(clk, vco);
  55                ret = 0;
  56        }
  57        return ret;
  58}
  59EXPORT_SYMBOL(clk_set_rate);
  60